Implementing Cisco IP Telephony and Video Part 1 (CIPTV1, legacy) — Question 21

When configuring Cisco Unified Communications Manager, which configuration enables phones to automatically reregister to a Cisco Unified Communications
Manager publisher when the connection to the subscriber is lost?

Answer options

• A. SRST
• B. Device Pool
• C. Cisco Unified CM Group
• D. Route Group

Correct answer: A

Explanation

The correct answer is SRST (Survivable Remote Site Telephony), which allows phones to maintain call services by connecting to a publisher when the subscriber fails. The other options, such as Device Pool and Cisco Unified CM Group, pertain to resource allocation and grouping rather than failover connectivity.